This kit is suitable for use in hot (140F max.) and cold (33F min.) water applications. Hand operated, replaces connections threaded or flanged, which require wrenches. It is used to branch off to different sockets for your RO unit. This kit fits standard OD 1/4 inch tubing. copper, CPVC, PEX and PVC for most RO systems. The water faucet adopts push-fit technology, which allows you to quickly disconnect the connection without using any tools. Simple operation, quick installation and time saving. Very convenient and effective. 100% safe food grade material, 100% leak free, 100% reusable. Product Features Fits 1/4 OD tubing on most RO systems. (Hose and C-clips are not included in this product kit.)Comes with 5 sizes of 1/4 OD fittingsThe water purifier faucet is made of food grade materials that are safe, leak-free and reusable. There is no need to worry about foreign bodies and impurities in the faucet seals mixing with drinking water and endangering your health. The quick connector includes: main body, inner claw, O-ring , loop, etc. Main body: straight, elbow connector, T connector, Y connector, stop valve. Inner claw: used to fix the water pipe. As the inner claw lifts, the claw blade shrinks and cuts the wall of the water pipe. The water pipe is fixed. Release the sub-blade under the inner claw to remove the water pipe. Sealing ring: used to seal the water pipe with the main body of the joint to prevent water leakage. Note: The inserted end in the joint of the water pipe should not have a sharp point to avoid damaging the sealing ring. Blue buckle: used to hold the inner claw in the bouncing state to prevent the water pipe from rushing due to excessive water pressure.This product has high compatibility and is suitable for most standard copper, CPVC, PEX and PVC pipe in the RO OD 1/4 system. At the same time, it has a wide range of uses, acting on reverse osmosis machines, water purifiers, direct drinking machines, water dispenser, water dispenser, etc. Installation method PE pipe should be carefully cut with a pipe cutter to ensure that the cut is flat ;Unplug the blue card ;Insert the PE tube into the connector (about 15-18mm);Insert the blue card to fix. Installation is complete. Disassembly method Unplug the blue card; press and hold the buckle of the turn;Remove the PE tube at the same time. Disassembly completed Precautions Material: food grade materials Color: White + blue Outer diameter: 6.35 mm Maximum water pressure tolerance: 20 bar / 40 kg Package content: 4x 1/4 OD inline shut-off ball valve 4 x 1/4 OD straight connectors 4x 1/4 OD union elbow 4x Union tee 1/4OD 4 x 1/4OD two way splitters The above are all manual measurement, there are errors (1-5mm)